Little is known empirically about intraclass correlations (ICCs) for multisite cluster randomized trial (MSCRT) designs, particularly in science education. In this study, ICCs suitable for science achievement studies using a three-level (students in schools in districts) MSCRT design that block on district are estimated and examined. Estimates of…

Performance-based accountability along with budget tightening has increased pressure on publicly funded organizations to develop and deliver programs that produce meaningful social benefits. As a result, there is increasing need to undertake formative evaluations that estimate preliminary program outcomes and identify promising program components…

This is the first examination of exemplary evaluation under a new editorial approach, in which the authors are attempting not only to report how the evaluation was conducted and to explain the rationale for design and implementation but also to examine the conditions, events, or actions that might have contributed to its exemplary status. This…